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An open trial to evaluate safety, tolerability and preliminary efficacy of repeated radiotherapy in combination with radioactive iodine therapy in patients with relapsed malignant brain tumours

An open label, single arm monocentric phase II study to evaluate safety, tolerability, and preliminary efficacy of carrier-added 4-L- [131I]iodophenylalanine (131I-IPA), administered as sequential injections in patients with recurrent IDH1/2 high grade glioma (HGG) concomitantly to 2nd line external radiation therapy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-006426-43-AT
Enrollment
10
Registered
2022-01-10
Start date
2022-02-16
Completion date
Unknown
Last updated
2025-02-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Previously confirmed histological diagnosis of malignant brain tumours (glioma), with current clinical or imaging evidence for first or second recurrence

Interventions

Product Name: [131I]-L-4-Iodophenylalanine Pharmaceutical Form: Infusion Current Sponsor code: 131 I-IPA Other descriptive name: 4-IODOPHENYLALANINE I-131 Concentration unit: GBq gigabecquerel(s) Conc

Sponsors

Kepler Universitätsklinikum Linz Neuromed Campus
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Previously confirmed histological diagnosis of HGG IDH1/2 wildtype, with current clinical or imaging evidence for first or second recurrence according to modified RANO criteria (2017). History of standard therapy (debulking surgery, followed by radio-chemotherapy (50–60 Gy in 2 Gy fractions, temozolomide). Patients treated with Radiotherapy alone in 1st line according to the elderly GBM protocol could also be included. 2. Interval since end of 1st line XRT =6 months 3. Amino acid-based molecular imaging (preferably 18F-FET-PET indicating pathologically increased amino acid uptake inside or in the vicinity of the tumour, clearly discernible from background activity. Surgery for relapsed tumour is allowed, if postoperative MRI and/or PET shows residual tumour in contrast enhanced MRI and/or 18F-FET-PET. 4.Current indication for repeat radiation therapy as discussed at the multidisciplinary neuro-oncological tumour board meeting. 5. Gross tumour volume (GTV) of up to 5 cm diameter, clinical target volume (CTV) 0.5 cm margin and planning target volume (PTV) = 0.5 cm margin Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Primary XRT dose > 60 Gy 2. Doses to organs at risk defined by Yasar and Tugrul (2005) exceeded or reached by prior radiation therapy; e.g. cumulative total dose on the optical chiasm >54 Gy for 2 Gy/fraction, a/ß=2 3. Multifocal distant recurrence, defined as tumour lesion outside the primary XRT field, as evidenced by amino acid-based PET imaging or CEMRI. 4. Prior treatment with brachytherapy 5. Prior treatment with bevacizumab 6. Localisation of tumour related to brain stem or axis, unless sufficient reserve capacity (e.g. remnant resection cavity, marked atrophy) to accommodate possible post–procedural tissue reactions, or pretherapeutic consent for emergency trepanation

Design outcomes

Primary

MeasureTime frame
Main Objective: To assess the safety and tolerability of intravenous 131I-IPA administered concomitantly to Re- XRT in recurrent HGG;Secondary Objective: 1. To measure the quality of life before and after therapy 2. Response assessment using mRANO criteria 3. Time to Progression, Progression free Survival 4. Overall survival;Primary end point(s): safety and tolerability of intravenous 131I-IPA administered concomitantly to Re- XRT in recurrent HGG;Timepoint(s) of evaluation of this end point: During the study in scheduled visits up to one year after treatment

Secondary

MeasureTime frame
Secondary end point(s): 1. To measure the quality of life before and after therapy 2. Response assessment using mRANO criteria 3. Time to Progression, Progression free Survival 4. Overall survival;Timepoint(s) of evaluation of this end point: During the study in scheduled visits up to one year after treatment

Countries

Austria

Contacts

Public ContactDepartment of Neurooncology

Kepler Universitätsklinikum Linz Neuromed

josef.pichler@kepleruniklinikum.at

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026